Calvin cole



@einen 'istr strat i @frn l CALVIN COLE, OF ITHACA, NEWr YORK.

Letters Patent No. 64,492, dater? l'l'ay T, 1867 IMPROVBD SASH-STOP.

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TO ALL WHO-M I'I MY CONCERN:

Be it known that I, CALVIN COLE, of Ithaca, in thc county of Tompkins, and State of New York, have invented certain new and useful improvements in Sash-Stops; and I do hereby declare that the following is a full, clear, and exact 'description of the saine, reference heinghad to the accompanying drawings, makinga por# tion of this specification, in which- Figure I is a front view and partial section on a reduced scale of a.. window fitted with a sash-stop conr` structed according to my invention.

Figure is ufucc view of a sash-.stop constructed according to my invention taken at right angles t-'o IV; and Figure 3 is a detached side view of the same looking from the same side as fig. 1.

Figure 4 is a face view corresponding to fig. Q, representing a modification of the invention. Similailetters of reference indicate corresponding parts in all the gures. This invention consists in a friction-wheel having a limited sliding movement, a friction bearing or surface, and a sustaining cord so combined with each other that when applied'to a window the sash thereof, when raised, may he automatically stopped at any desired height. The invention further consists in a novel means whereby the tension of the sustaining cord may be very readily regulated to insure the most eiiicient operation of the device in stopping thc sash as aforesaid.

To enable others to understand the construction and operation of my invention I will proceed'to describe it with reference to the drawings. y l

A represents the window-frame or casing-andi?) the sliding lower sash of such window'. Inserted in one of the lateral edges of this sash, preferably at or near the centre thereof, isa metallic case, a, in which is placed a. friction-wheel, e, the ends of the pivote of the said wheel being fitted into vertical slots d formed in the eliv sides of the case a, as indicated in fig. 3, in such manner that the wheel may have a slight verticalmovement *z Y within the said case. This wheel is formed with a circumferential V-shapcd groove, as shown more fully in lig. 2; and fixed in the upper part of the case a, immediately above the wheel b, is a friction bearing or surface, e, which maybe formed of a piece of leather or equivalent material firmly secured in the said upper part of the ease'in such manner that when the wheel b is moved upward with reference to the said case, its periphery, upon each side of the groove formed therein, will be brought inpcontact with such friction bearing c. The sustaining cord is shown at d, and is passed once around the friction-wheel b in the V-shaped groove thereof, and has itsv two extremities attached respectively at the top and bottom of the adjacent innerside of the frame or casing A, in such manner that Vwhen the sash is raised the loop formed around the friction-wheel b by the winding around it of the cord d, by retarding the upward movement of the wheel, brings it'away from or out of contactk with the friction bearing c, as shown in rod outline in tig. I, the pivot a thereof striking the lower ends of the slots b', in which the ends thereof are situated, whereupon, the upward movement of the sash being continued, the wheel itself is'of course also carried upward, being rotated at the same time by the friction of the sustaining cord upon it. When the upward movement of thc sash is discontinued, and such sash is relieved from upward i pressure, the loop Yof the sustaining cord retards any tendency of thc wheel to be moved downward with the f sash, whereupon the weight of the sash causes it to descend until the friction bea-ring c is brought against the' periphery of thewheel I), and by its friction thereon prevents` it from rotating, and the wheel being thus brought i into a fixed position, the friction of the surrounding loop of the sustaining cord upon it prevents thc further descent ofthe sash by its own weight alone, it being necessary, in order to lower the sash, to apply a downward pressure thereto suiiicient toovercome such friction ofthe cord upon the wheel. Instead of having the friction bearing act upon thc periphery of the friction-wheel, as hereinbcforc set forth, the said wheel may be furnished l at one side with a cylindrical extension, as shown in fig. 4, the friction bearing c acting upon the circumference of the said extension in the salne manner and producing the saine result as when acting upon the periphery of the wheel itself. Inasmuch as the degree of friction exerted upon the .wheel b is proportioned to the tension of' the sustaining cord (l, it is desirable that provision should be made for regulating such tension, and to this end the lower extremity of the aforesaid cord is att-ached to'a small metallic plate or piece, e, which has a slot, e', formed longitudinally therein, through which is passed the screw ci, which secures the piece e to the side'of the window-frame, so that by adjusting the aforesaid piece higher or lower, as the ense may require7 the tension of the sustaining cord may be regulated to any desired degree.

What I cla-im as my invention, and desire to secure by Letters Patent, isl. The combination of the friction-111001 b, having 1L limited sliding movement, with the fiietion bearing or surface c, and the sustaining cord d, substantially as herein described foi'y the purpose specified.

2. The. combination of the:` slotted adjustable piece 1, with the sustaining @o1-dd, substantially as heroin described for the purpose specified.

CALV IN COLE. Witnesses:

J. W. Comms, G. W. REED.- 

